.focus {
    position: relative;
    width: 100%;
    height: 455px;
    /* margin: 200px 0 0 500px; */
    overflow: hidden;
}
.focus ul {
    position: absolute;
    top: 0;
    left: 0;
    width: 600%;
}
.arrow-l,
.arrow-r {
    display: none;
    position: absolute;
    top: 50%;
    margin-top: -20px;
    width: 24px;
    height: 40px;
    background: rgba(0, 0, 0, .3);
    text-align: center;
    line-height: 40px;
    color: #fff;
    font-size: 18px;
    z-index: 2;
}

.arrow-r {
    right: 0;
}
.focus ul li {
    float: left;
}
.fl {
    float: left;
}
.circle {
    position: absolute;
    bottom: 10px;
    left: 50px;
}

.circle li {
    float: left;
    width: 8px;
    height: 8px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    margin: 0 3px;
    border-radius: 50%;
    /*鼠标经过显示小手*/
    cursor: pointer;
}

.current {
    background-color: #fff;
}